Corrugated-sheet-metal car end



W. P. MURPHY.

CORRUGATED SHEET METAL CAR END.

APPLICATION FILED MAY 28, 1921.

Patented Nov. 29, 1921.

UNITED STATES WALTER P. MURPHY,

OF NEW YORK, N. Y.

CORRUGATED-SHEET-METAL GAR END.

Specification of Letters Patent.

Patented Nov. 29, 1921.

Division of application Serial No. 82,423, filed March 6, 1916, (now Patent No. 1,309,484, dated July 8, 1919,) through the copendency of its division, Serial No. 304,429, filed .Tune 10, 1919, renewed May 28, 1921, Serial No. 473,318. This application filed May 28, 1921.

To all whom it may concern:

Be it known that I, VALTER P. MURPHY, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented certain new and useful Improvements in Corrugated-Sheet-Metal Car Ends, of which the following is a specification.

My invention relates to a sheet metal car and structure for a railway car, more especially a box car (although the invention might be readily adapted to gondola cars) formed with vertically disposed ribs or corrugations for strengthening the. end as against cargo thrusts, weaving of the car superstructure, and weight of the roof load. The object of the invention is to provide a corrugated sheet metal end structure having two series of vertically disposed corrugations of diminishing depth with the corrugation of maximum depth adjacent the vertical center line of the end, whereby the center portion of the end which is subjected to the severest stresses is given a maximum reinforcement and the remaining portions are reinforced proportionately to their needs.

The invention is illustrated, in a preferred embodiment, in the accompanying drawing wherein- I Figure 1 is an end elevation of a railway box car superstructure provided with a reinforced end wall in accordance with my invention.

Fig. 2 is a vertical sectional view on line 22 of Fig. 1.

Fig. 3 is a sectional plan, on a larger scale, taken on line 33 of Fig. 1, and

Fig. 4 is a fragmentary plan view of the end of the car with the roof boards removed.

Referring to the drawing, which shows a. common type of box car of wood construction, 10 designates the end sill of the car 11, 11 the adjacent corner posts, 12, 12 the side sheathings, 13, 13 the side plates, 14 the ridge pole of the roof, 15 the purlins and 16 the flooring of the car.

The end structure consists of two metal Serial No. 473,377.

sheets 17, 18, overlapped along the vertical center line of the car and secured together by rivets 19. The sheets are formed on their outer edges with flanges 2O overlapping and secured to the side sheathings 12. The lower edges of the sheets are preferably formed with inturned flanges 21 which are secured to the end sill 10 by bolts 22. The upper edges of the sheets, which are preferably rectangular in their original form, are bent over on lines corresponding to the .slope of the roof to provide inturned flanges 23, 23 (anchored by brackets- 24, 24 tothe side plates 13 and secured together at their inner ends by a plate 25 to which the ridge pole 14 is secured by bolts 26. The purlins 15 bear upon and are secured to flanges 23.

The sheets 17 and 18 are symmetric-ally formed. Each sheet is formed with a corrugation 27 of maximum depth, or cross sectional size, at the edge joined to the other sheet, and with a plurality of corrugations 28, 29, 30 and 31 of progressively lesser depth between the corrugation 27 and the outer edge of the sheet. All the corrugations preferably project outwardly from the plane of the margins of the sheets and each corrugation merges by curved surfaces into the adjacent corrugation so that any tendency of one corrugation to deflect under cargo thrusts, for example, is checked by the resistance afforded by the adjacent corrugations.

The deflection of a sheet metal car end wall under a cargo thrust of given intensity is greatest when the force is exerted at points along the vertical center line of the end wall, and Will be proportionately less for applications of this force at points approaching the side walls of the car. With the end composed of plates corrugated as herein shown, the rigidification afl'orded by the corrugations is properly proportioned so that every part of the end receives the due amount of reinforcement which it needs in order that the end panel as a wholelmay have a uniform capacity throughout for resisting deflection.

This application is a division of my application Serial No. 82,423, filed March 6, 1916 (patented as No. 1,309,48 July 8, 1919) through the co-pendency of a divisional application thereof, Serial No. 30%,429 filed June 10, 1919 and renewed May 28, 1921, as Serial No. 173,318.

I claim:

1. A car end structure comprising two end sheets secured together along the vertical center line of the end and formed with corrugations which are deepest adjacent said vertical center line and are progressively shallower each with respect to the preceding one toward the sides of the car.

2. A car end structure comprising two end sheets secured together along the vertical center line of the end and formed with vertical corrugations which are deepest adjacent said vertical center line and are progressively shallower each with respect to the preceding one toward the sides of the car.

3. A car end structure comprising two end sheets secured together along the vertical center line of the end, each of whichsheets is formed with a vertical corrugation of maximum depth at the edge secured to the other sheet, and with a plurality of corrugations progressively shallower each with respect to the preceding one toward the opposite edges of the sheet.

4:. A car end structure comprising two end sheets secured together along the vertical center line of the end, each of which sheets is formed with a vertical corrugation of maximum depth at the edge secured to the other sheet, and with a plurality of corrugations progressively shallower each with respect to the preceding one toward the opposite edges of the sheet, said corrugations merging by curved surfaces one into the other. for the purpose specified.

5. A sheet metal end panel for a railway car composed of two metal sheets overlapped and secured together along a vertical line with their opposite edges formed with flanges for attachment to the side walls of the car, said sheets being formed each with a series of corrugations of successively less depth each with respect to the preceding one with the deepest. corrugation at the edge joined to the other sheet.

6. A sheet metal end panel for a railway car composed of two metal sheets overlapped and secured together along a vertical line with their opposite edges formed with flanges for attachment to the side walls of the car, said sheets being formed each with a series of corrugations of successively less depth with the deepest corrugation at the edge joined to the other sheet, and the upper and lower edges of said sheets being bent over to provide flanges for attachment to the upper and lower frame members of the car.

7. A sheet metal end structure for a railessee-e way car provided on opposite sides of the vertical center line of the end with a pair of contiguous vertically extending corrugations of maximum depth and on each side of said corrugations with a series of vertical corrugations which successively diminish in depth each with respect to the preceding one toward the sides of the car.

8. A sheet metal end structure for a railway car provided on opposite sides of the vertical center line of the end with a pair of contiguous vertically extending corrugations of maximum depth and on each side of said corrugations with a series of vertical corrugations which successively diminish in depth each with respect to the preceding one toward the sides of the car, all of said corrugations projecting outwardly from the plane of the margins of the sheets.

9. A car end structure for a railway car comprising two end sheets secured together along the vertical center line of the end and formed with corrugations outwardly proj ecting from the plane of the margins of the sheets, which are deepest adjacent said vertical center line and are successively shallower each with respect to the preceding one toward the sides of the car. i

10. A car end structure comprising two end sheets secured together along the vertical center line of the end and formed with vertical corrugations outwardly projecting from the plane of the margins of the sheets, which corrugations are deepest adjacent said vertical center line and are successively shallower ea 11 with respect to the preceding one toward e sides of the car. 7

11. A car end structure composed of two end sheets secured together along the vertical center line of the end, each of which is formed with a vertical corrugation of maxi-' mum depth at the edge secured'to the other sheet and with a plurality of corrugations successively shallower each with respect to the preceding one toward the opposite edge of the sheet; said corrugations projecting outwardly from the plane of the margins of the sheet and merging by curved surfaces one into the other.

12. A sheet metal end structure fora railway car composed of two sheets joined along the vertical center line of the end and each provided with a series of vertically extending reinforcing projections, the projection at the edge of the sheet which is joined to the other sheet being of maximum strength and rigidity and the other projections of successively less strength and rigidity each with respect to the preceding one.

13. A sheet metal end structure for a railway car provided on opposite sides of the vertical center line of the end with a pair of vertically extending projections which are contiguous and without intervening projections and on each side of said pair of projections' with a series of vertically extending of corrugations of successively smaller cross rojections which are of successively diminsectional size eachwith respect to the prelshed strength and rigidity each with respect ceding one which are substantially parallel 10 to the receding one. to, the line of joinder of the sheet with the 5 14. car end structure comprising two corrugations of maximum depth adjacent metal end sheets having adjacent edges sesaid line. cured together and 'formed each with a series WALTER P. MURPHY. 

